package com.example.hw2.util;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class DaoUtil {

    private  static   SqlSessionFactory sqlSessionFactory;
    static {

        try {
            //1.得到sqlSessionFactory对象
            String resource = "mybatis/mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

        } catch (IOException e) {
            e.printStackTrace();
        }


    }

       //2.得到能执行sql语句的对象
    public static SqlSession getSqlSession(){
          return  sqlSessionFactory.openSession();

    }

}
